EP 0172543 A2 19860226 - Dispersants for aqueous slurries.
Title (en)
Dispersants for aqueous slurries.
Title (de)
Dispergatoren für wässrige Schlämme.
Title (fr)
Agents dispersants pour pâtes aqueuses.
Publication
Application
Priority
US 64298884 A 19840822
Abstract (en)
The present invention provides a water-soluble dispersant for aqueous slurries of coal, lignite, cement, gypsum, and fillers. The dispersant comprises a sulfonated mixture of polynuclear fused-ring aromatic hydrocarbon compounds. The mixture, prior to sulfonation, (a) is liquid at a temperature of 100 DEG C, (b) has an aromatic content of more than sixty percent, and (c) a weight average molecular weight of less than five hundred.
IPC 1-7
IPC 8 full level
C09K 23/00 (2022.01); C09K 23/12 (2022.01); C10L 1/32 (2006.01)
CPC (source: EP US)
C09K 23/00 (2022.01 - EP US); C09K 23/12 (2022.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
US 4541965 A 19850917; AU 4590385 A 19860227; AU 575192 B2 19880721; BR 8504005 A 19860610; CA 1243918 A 19881101; DE 3582835 D1 19910620; EP 0172543 A2 19860226; EP 0172543 A3 19871209; EP 0172543 B1 19910515; JP S6186934 A 19860502
DOCDB simple family (application)
US 64298884 A 19840822; AU 4590385 A 19850808; BR 8504005 A 19850821; CA 488189 A 19850807; DE 3582835 T 19850817; EP 85110300 A 19850817; JP 18381285 A 19850822